Removing duplicate 'using namespace blink;' in platform and web

Source/web/tests/WebUserGestureTokenTest.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 20 matching lines @@
 #include "config.h"
 
 #include "public/web/WebUserGestureToken.h"
 
 #include "platform/UserGestureIndicator.h"
 #include "public/web/WebScopedUserGesture.h"
 #include "public/web/WebUserGestureIndicator.h"
 #include <gtest/gtest.h>
 
 using namespace blink;
-using namespace blink;
 
 namespace {
 
 TEST(WebUserGestureTokenTest, Basic)
 {
     WebUserGestureToken token;
     EXPECT_FALSE(token.hasGestures());
     UserGestureIndicator::clearProcessedUserGestureSinceLoad();
     EXPECT_FALSE(UserGestureIndicator::processedUserGestureSinceLoad());
 
@@ skipping 23 matching lines @@
 
     {
         WebScopedUserGesture indicator(token);
         EXPECT_FALSE(WebUserGestureIndicator::isProcessingUserGesture());
     }
 
     EXPECT_TRUE(UserGestureIndicator::processedUserGestureSinceLoad());
 }
 
 }